New 7" Dual Diaphragm chrome plated power brake booster, master cylinder & disc/drum proportioning valve combo. This 7" power booster is hand polished before a chrome finish is applied for a top quality finish. The black powder coated mount and pushrod assembly is a direct fit to your factory firewall for that fresh factory look. Also included in this kits is a new chrome 1-1/8" bore flat top master cylinder and proportioning valve equipped to work with front disc rear drum applications.